I believe this was only a district court judge that made this ruling, who is not even an appellate judge. Ultimately the US Supreme Court is who can make the final decision on the constitutionality of the draft.

I agree we will probably not see a draft again, because modern wars are fought more efficiently in terms of manpower, and "boots on the ground" than either of the World Wars or Vietnam.

One could even say that Wars are no longer fought with guns and bombs anymore, but rather with economic weapons such as Sanctions, and cyber warfare such as hacking an enemies power grid and military networks.